[benzguy]

Since 'A' in a Mercedes model name usually means something small, I think that's what it will be here.

 

[Parkwood]

Could it be for the Atcros Trucks?

 

[Dar]

My guess is MB.EQ is another acronym for Mercedes Benz Electric Intelligence, the brand for electric mobility from Mercedes-Benz. And MB.AQ is an acronym for the Mercedes Benz AMG version of this (also acceleration intelligence ) since EAQS is more awkward than AQS for an electric AMG S class. A also sounds like E but with a twist